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Hell Volhard-zelinsky reaction
In presence of Red P and diffused light or Hell Volhard-zelinsky reaction
Carboxylic acid comprising an α-hydrogen react with Cl2 or Br2 in the existence of a small amount of red phosphorus to provide chloro acetic acid. The reaction is termed as Hell Volhard-zelinsky reaction.
As compared to covalent compounds, electrovalent compounds generally have: (1) Low melting points and low boiling points (2) Low melting points and high boiling points (3
Properties of Nitrophenols: O-Nitrophenol is a yellow in colour crystalline compound, whereas m- and p-isomers are colourless crystalline compounds. Isomer orth
3 kinds of isomerism indienes alkynes
Borazole is very stable because it is aromatic; each nitrogen contributes two p electrons and each boron contributes zero electrons, for a total of six p electrons in the aromatic
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How many octahedral and tetrahedral voids are present in HCP? Ans) octa -no of atoms prsnt ,nd tetra -twice of it.
physical properties
The tetrahedral arrangement of four ligands surrounding the metal ion may be visualized. It is clear that in tetrahedral field, none of the orbitals point exactly towards the ligan
The electron density between 1s and 2s orbital is : (1) High (2) Low (3) Zero (4)None of these Ans:Zero
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